Clamp for positioning metallic curb edging



April 29, 1930'. c. s. HEMPSTE-AD CLAMP FOR POSITIONING METALLIC CURBEDGING Filed Oct. 31, 1928 INYENTOR Chg rls S. He P'sl'eq d.

bg 20M flfl/m his attorney Patented Apr. 29, 1930 UNITED STATES CHARLESs. HEMPSTEAD, on NEW SALEM, PENNSYLVANIA, ASSIGNOR or oNE-HALF TOWILLIAM B. WHARTON, OF PITTSBURGH, IP ENNSYLVANIA' CLAMP FOR POSITIONINGMETALLIQQURB EDGIIVG,

Application filed. October 31,1928. Serial No: 316,292.

This invention relates to a clamp to be used in positioning metallicedges for roadway curbs and the like.

In supporting metallic edges or cornices for curbs, a great deal ofdifiiculty has been experienced in positioning and maintaining them inproper alignment while the concrete is being poured into the usual curbforms.

The object of this invention is to provide a clamp of simple structurewhich may be read.- ily utilized to position and fix metallic edges forcurbs during pouring of the concrete to form the curbproper.

In the accompanying drawings Figure I is a fragmentary plan view of aportion of a cement road, showing the curb forms positioned adjacent oneedge thereof, and showing clamps of the present invention in position toretain the metallic curb edging; Figure II is a sectional view taken onthe line II-II of Fig. I; Figure III is an enlarged view of a slightlymodified form of the clamp of the present invention; Figures IV and Vare respectively a side elevation and a plan View of a still furthermodified form of the clamp; and Figure VI is a sectional view, similarto that of Fig. II, showing a clamp adapted to retain a curb edging of aslightly modified cross section.

The reference numeral 1 denotes a portion of solidified concreteroad-bed upon and adjacent which are fixed the metallic curb forms 2 and3. The cement to form thecurb is poured into the space 4 between thesaid two curb forms. It is common practice to provide the cross members5, which are fastened, as shown, to secure in spaced relation theaforesaid forms. The metallic curb edging 6 usually is positionedadjacent the inner upper edge of the form 3, so that when the concreteis poured and allowed to harden, the edge 6 is embedded at the upper andinner edge of the curb.

In Figures I, II and III the curb edging illustrated is curved in crosssection and presents an outer rounded corner for the finished curb. Itis ordinarily difiicult to position this type of curb edging, but withthe aid of the clamps 7 this difiiculty is eliminated.

The'particular shape of inner portions of the clamps .7, which engagethe metallic edging 6 is of prime importance. It willbe noted that theclamps are constructed tor-form the corner 8, which receives the edge 6of the curb edging member 6, andthe clamp is provided with the inturnedportion 9. This portion 9 is so formed, and is of such length that itengagesthe lower edge G of, the edging mem bel6. When the clamps? arepositioned on top of the curbing form-3, and the tightening wedges 10hammered into position, as illustrated in the drawings, the edge 6 isdrawn flush with the inner surface 3 of the form and at the properelevation. After pouring,

the concrete in the form members 2 and 3 is smoothed along-its extent,forming an upper surface which lies parallel to the top surfaces of theform members, and manifestly the edge 6 will be flush with the uppersurface of the concrete.

PATENT, orFics-f,

After the poured concrete is set or partially hardened, the clamps maybe torn out without disturbing the curb edging, and the resulting holesin the concrete may be easily patched and smoothed over.

Although the wedges 1O serve well fordrawing the clamps? tightly intoposition on the form 3, it should be understood that the threaded clampmember 11, shown in Fig. III, or the arrangement of the eccentricallymounted wheel 12, shown in Figures IV and ice."

any"

Due to the difiiculty experienced in the past in mounting curb edgings,there has been a tendency to avoid their use. However, their usefulnessis Well known in preserving curbs, and the clamp of the presentinvention makes it mer ial y es o m nt the cur edgingsYW-ith littledifficulty, and the clamp is therefore of great utility. I i

What. claim is;

In ination mth a .:.11rb. .I g- 39- 3 1;. a clamp including a centralportion seated on the curbing-form an end portion extend ing downwardlyfrom one end thereof and spaced from the inner surfa ed; said urb;- ing-forni, together with an inturned portion extending tron; said endportion into eontact andeooperating with the said inner surface of theeurbing form.

Y 2, In oorn'binationwith a curbing-form a clamp including a. eent-ralportion seated on the curbing io'rrn and an end portion extendingdownwardly and an intur-ned portion extendingtheretrom, the central andend and inturned ola rnp portio ns cooperating V with the inner surfaceof said curbing-form to position and retain members as desribed. Inwitness'- Whereof, I hereunto set my hand} 7 k i CHARLES S, HEMPST-EAD.

